As the end of support for Windows 10 approaches on October 14, 2025, many users are asking the crucial question: what happens to Windows 10 security after that date? For both business and home users, it's important to understand what options are available to maintain system security after Microsoft officially ends support.

In this guide, we look at how security is handled after Windows 10 support ends, the risks of continuing to use an unsupported version of Windows and what options are available to continue to protect the system.

What happens when support for Windows 10 ends?

When Windows 10 reaches end of support, Microsoft will stop providing free security updates, patches and bug fixes. This means:

  1. No more security updates: Microsoft no longer releases updates to fix security vulnerabilities, leaving your system exposed to potential threats and exploits.
  2. No bug fixes: Problems or bugs that occur after October 2025 will no longer be fixed, which can lead to performance problems.
  3. No technical support: Microsoft customer support will no longer provide help with problems with Windows 10.

Risks when using an unsupported Windows 10

Using an operating system without security updates involves considerable risks:

  • Increased vulnerability to attacks: Without security updates, cybercriminals could exploit new vulnerabilities. This makes your system an easy target for malware, ransomware and other threats.
  • Compatibility problems: As software developers optimize for newer systems such as Windows 11, applications may no longer work correctly on Windows 10.
  • Legal and compliance risks: For companies, the use of unsupported software can lead to violations of industry-specific regulations - with legal and financial consequences.

How to secure Windows 10 after October 2025

If you are wondering how you can secure your system after the deadline, there are several options available to you:

1. Upgrade to Windows 11

The easiest solution is to upgrade to Windows 11, which offers the latest security features, ongoing updates and improved performance. However, not all Windows 10 PCs meet the strict hardware requirements of Windows 11.

  • Check compatibility: Use Microsoft's PC Health Check tool to determine if your hardware is suitable for the upgrade. If so, upgrading is the best way to maintain security.
  • Upgrade process: The upgrade from Windows 10 to Windows 11 is usually seamless via the Windows update settings.

2. Extended security updates (ESU) for companies

Microsoft has announced an Extended Security Update (ESU) program for business customers - similar to the one that was offered after the end of support for Windows 7. This subscription-based service enables companies to continue receiving important security updates for Windows 10 - even after October 2025.

  • Prices: There is an annual fee for the ESU program, which increases each year. Although this can be costly, it ensures security for legacy systems that cannot be updated immediately.
  • Availability: The ESUs are generally available for up to three years beyond the official end of support, i.e. until 2028.

3. Switch to Linux or another operating system

If an upgrade to Windows 11 is not possible, a Linux-based operating system can be an alternative. Linux is lightweight, secure and free - ideal for older hardware.

  • Familiarization phase: Switching to Linux requires some technical understanding, as the interface and software ecosystem differ from Windows.
  • Compatibility: Some Windows applications do not work under Linux. Alternatives must be found or tools such as Wine must be used.

4. Use third-party security solutions

If you want to continue using Windows 10 after October 2025, third-party security solutions such as antivirus programs and firewalls can mitigate the risk - but they do not replace official security updates.

  • Antivirus software: Continue to use reputable antivirus programs that offer protection against malware, ransomware and other threats. However, they cannot fix system vulnerabilities.
  • 0patch solution: The 0patch service offers micro-patches for known vulnerabilities in unsupported operating systems. It is not a full replacement for official updates, but can offer a certain degree of protection.

5. Replace hardware

If your current hardware is not compatible with Windows 11, you should consider a hardware upgrade. New devices offer better performance and modern security features such as TPM (Trusted Platform Module).

  • Windows 11 compatible devices: When buying, look out for TPM 2.0, secure boot functions and sufficient computing power.
  • Long-term investment: New hardware ensures compatibility with future Windows versions and creates a more secure working environment.

Conclusion: What should you do?

If you are currently using Windows 10, you should make a decision in good time. Here is an overview of your options:

  1. Upgrade to Windows 11if your hardware is compatible - this is the safest and most efficient solution.
  2. Use extended security updates (ESU)if your company operates business-critical systems that cannot be updated immediately.
  3. Switch to Linux or another systemif older hardware is to continue to be used, but security must be guaranteed.
  4. Use third-party security solutionsThese are not a complete replacement for official updates.
  5. Upgrade hardwareto future-proof your system and prepare it for upcoming Windows versions.

If you choose one of these options in good time, you can continue to work securely even after support for Windows 10 ends in October 2025.